Derek Velzy
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  • Tempe, AZ
  • United States
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Europa, Enceladus, and Titan

Posted on March 22, 2018 at 6:49pm 0 Comments

Based on recent readings, especially from Christopher McKay in How to Search for Life on Other Worlds, I’ve come to believe that life only needs the right combination of three main requirements: a main solvent to host chemical reactions (ours on Earth being water), a mixture of common building-block elements (Carbon, Hydrogen, Oxygen, Phosphorus, Nitrogen, Sulfur are examples of this), and enough energy to cause chemical reactions.  In Astrobiology lecture, we have discussed life…

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The Most Adaptable Species

Posted on February 3, 2018 at 1:12pm 0 Comments

When we think of the most adaptable species, what comes to mind? Camels are able to survive without food or water for months, cockroaches are said to have survived the atomic bombs on Hiroshima and Nagasaki in World War II, and Emperor Penguins are able to make journeys 60+ miles long with their last meal being four months earlier. All of these species are very well suited towards their particular environment, but if one were to put a camel in Antarctica, or an emperor penguin in the Gobi…

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Why Limit Our Definitions?

Posted on January 18, 2018 at 5:59pm 0 Comments

Astrobiologists, amongst other biological scientists, have not yet settled on a standard definition for what they consider to be life; this is because there are so many loopholes and exceptions to each new definition-theory that we come up with. To a FAR lesser degree it is almost like trying to come up with a standard definition of a hamburger. Is it two separate bread buns with a beef patty in the center? What about protein style at In-N-Out where the buns are replaced by a lettuce wrap?…

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